/Engine/Source/Runtime/Core/Public/Serialization/PackageWriter.h
Report whether an additional save is needed and set up for it if so. Used for diffing.
virtual bool IsAnotherSaveNeeded ( [FSavePackageResultStruct](API\Runtime\CoreUObject\UObject\FSavePackageResultStruct) & PreviousResult, [FSavePackageArgs](API\Runtime\CoreUObject\UObject\FSavePackageArgs) & SaveArgs )